Articles | Volume 9, issue 2
Earth Surf. Dynam., 9, 379–391, 2021
https://doi.org/10.5194/esurf-9-379-2021
Earth Surf. Dynam., 9, 379–391, 2021
https://doi.org/10.5194/esurf-9-379-2021

Research article 26 Apr 2021

Research article | 26 Apr 2021

Controls on the hydraulic geometry of alluvial channels: bank stability to gravitational failure, the critical-flow hypothesis, and conservation of mass and energy

Jon D. Pelletier

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Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision
AR by Jon Pelletier on behalf of the Authors (11 Dec 2020)  Author's response    Manuscript
ED: Referee Nomination & Report Request started (21 Jan 2021) by Rebecca Hodge
RR by Roberto Fernández (he/him/él) (30 Jan 2021)
RR by Gordon Grant (03 Feb 2021)
ED: Publish subject to technical corrections (23 Feb 2021) by Rebecca Hodge
ED: Publish subject to technical corrections (24 Feb 2021) by Tom Coulthard(Editor)
AR by Jon Pelletier on behalf of the Authors (02 Mar 2021)  Author's response    Manuscript
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Short summary
The sizes and shapes of alluvial channels vary in a systematic way with the water flow they convey during large floods. It is demonstrated that the depth of alluvial channels is controlled by the resistance of channel bank material to slumping, which in turn is controlled by clay content. Deeper channels have faster water flow in a manner controlled by the critical hydraulic state to which channels tend to evolve. Channel width and slope can be further quantified using conservation principles.